The MicroBeta2 LumiJET System provides advanced radiometric and luminescent detection abilities for GPCRs, kinases, reporter gene assays, and traditional liquid scintillation counting. Providing coincidence counting, a unique patented configuration with two photomultiplier tubes that simultaneously detect signal, the Microbeta2 LumiJET ensures high efficiency and extremely low background for a variety of radionuclides, as well as injectors for applications where direct injection of reagents is required.